Research on noise characteristics and control technology of heavy haul railway in China

This paper briefly describes the development process and the characteristics of heavy haul railway in China, summarizes the current situation of noise impact of heavy haul railway at home and abroad, and researches on low-noise control technologies of heavy haul trains. The noise characteristics of China's heavy haul railways were studied through field tests. The results showed that when the passing velocity of heavy haul trains increased from 60km/h to 100km/h, the regression coefficient K of radiated noise and velocity was 20-25. Through the comparative analysis of the noise between the heavy haul train and the freight train, it is proved that the low-noise control technologies have significant noise reduction effect.